| 摘要 |
PURPOSE:To semiautomatically input the three-dimensional structure of a solid body by inputting correspondences among segments on plural line drawings different in viewpoint position. CONSTITUTION:Winged edge data is generated for each of two line drawings labeled by a line drawing correspondence function 1, and these data are used to allow both line drawings to partially correspond to each other, and planes are detected from line drawings allowed to correspond to each other by loop detection. A position change calculating function 2 calculates the change of the viewpoint position like a camera position, where each line drawing is photographed, in accordance with correspondence relations between both line drawings obtained by the line drawing correspondence function 1. A three- dimensional detecting function uses correspondence relations obtained by the line drawing correspondence function 1 and information of the change of the viewpoint position calculated by the position change calculating function 2 to calculated apex positions, equations of planes, etc., and the three-dimensional structure in parts where correspondence is left unsettled is determined. Thus, only correspondences of several segments are inputted to semiautomatically detect the three-dimensional structure of the solid body. |
